THE ROUGHNESS OF WIND-WAVES

被引：107

作者：

MAAT, N ^{[1
]}

KRAAN, C ^{[1
]}

OOST, WA ^{[1
]}

机构：

[1] DELFT UNIV TECHNOL, DEPT APPL PHYS, DELFT, NETHERLANDS

来源：

BOUNDARY-LAYER METEOROLOGY | 1991年 / 54卷 / 1-2期

关键词：

D O I：

10.1007/BF00119414

中图分类号：

P4 [大气科学（气象学）];

学科分类号：

0706 ; 070601 ;

摘要：

In this paper, a new dynamic roughness equation for airflow over wind waves is proposed, based on relationships of dimensionless parameters and the 1986 HEXMAX field data. The equation can be considered as a modification of the Charnock formula. The data are also compared with the parameterizations of Toba and Koga, and of Hsu, and the consequences of the new equation for aerodynamic drag are discussed. In the new equation, the drag coefficient is expressed as a function of both wind speed and wave age c(p)/u*. This testifies to the strong wave-age dependence of the drag, found in several experimental studies. It is also in good agreement with results of a theoretical model of the airflow-seawave interaction, proposed by Janssen (1989).

引用

页码：89 / 103

页数：15

共 34 条

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